Precautions; Installation - AKG CA810 Manual

1.1 Precautions

1. Spill no liquids on the equipment and do not drop any objects through openings in
the equipment.
2. Do not place the equipment near heat sources such as radiators, heating ducts, or amplifiers
and do not expose it to direct sunlight, excessive dust, moisture, rain, mechanical vibrations, or
shock.

2. Installation

Installing the CA810 properly is simple, and only requires attention to a few issues. The CA810
should be used in a grounded metal rack. One open rack space should be provided above and
below the CA810 for proper ventilation. Shown below are the connections for both non-bridged
and bridged operation.
NON-BRIDGED OUTPUT
The standard CA810 configuration would have a
balanced output device (like the MM8 Matrix
Mixer) driving each channel of the CA810. The
speaker is connected in the non-bridged mode.
Maximum output power is 10W into 4 Ohms, or
6W into 8 Ohms. See Figure 2.
When driving the CA810 with an unbalanced
source, the (-) terminal is connected to the ground
of the driving signal, as well as the ground termi­
nal of the CA810 input. Figure 3 shows this con­
figuration.
BRIDGED OUTPUT
Two adjacent channels of a CA810 may be con­
nected as shown to allow bridging operation. In
the bridged mode, the minimum speaker load is
8 Ohms, and maximum power output is 20W into
8 Ohms. Note that since the Channel Level con­
trols of both bridged channels will be active, they
should be set to the same level. The loudspeaker
is connected to the "+" output terminals of each
channel, while the "-" outputs are left uncon­
nected. See Figure 4.
Figure 5 shows bridging operation using an un­
balanced source.
CA
Input
810
GND
GND
DRIVING DEVICE
Figure 2 - Balanced Input / Non-Bridged Output
CA
Input
810
GND
GND
DRIVING DEVICE
Figure 3 - Unbalanced In / Non-Bridged Out
In 1 In 2
CA
810
GND
GND
DRIVING DEVICE
Figure 4 - Balanced In / Bridged Out
CA
In 1 In 2
810
GND
GND
DRIVING DEVICE
12
CA810
Output
Output
Out 1 Out 2
Out 1 Out 2
Figure 5 - Unbalanced In /
Bridged Out